No uniform realisation is possible.

Incidence matrix according to Dynkin symbol

β3x3β4x

both( . . . . ) | 384 |   1   1   1   1   1   1 |  1  1  1  1   2  1   2  1 |  1  1  1 1  2
----------------+-----+-------------------------+---------------------------+--------------
both( . x . . ) |   2 | 192   *   *   *   *   * |  1  1  1  0   0  0   0  0 |  1  1  0 1  0
both( . . . x ) |   2 |   * 192   *   *   *   * |  1  0  0  1   0  1   1  0 |  0  1  1 1  1
both( s 2 s . ) |   2 |   *   * 192   *   *   * |  0  0  0  0   2  0   2  0 |  1  0  1 0  2
sefa( β3x . . ) |   2 |   *   *   * 192   *   * |  0  1  0  0   1  1   0  0 |  1  1  0 0  1
sefa( . x3β . ) |   2 |   *   *   *   * 192   * |  0  0  1  0   1  0   0  1 |  1  0  0 1  1
sefa( . . s4x ) |   2 |   *   *   *   *   * 192 |  0  0  0  1   0  0   1  1 |  0  0  1 1  1
----------------+-----+-------------------------+---------------------------+--------------
both( . x . x ) |   4 |   2   2   0   0   0   0 | 96  *  *  *   *  *   *  * |  0  1  0 1  0
      β3x . .   ♦   6 |   3   0   0   3   0   0 |  * 64  *  *   *  *   *  * |  1  1  0 0  0
      . x3β .   ♦   6 |   3   0   0   0   3   0 |  *  * 64  *   *  *   *  * |  1  0  0 1  0
both( . . s4x ) ♦   4 |   0   2   0   0   0   2 |  *  *  * 96   *  *   *  * |  0  0  1 1  0
sefa( β3x3β . ) |   4 |   0   0   2   1   1   0 |  *  *  *  * 192  *   *  * |  1  0  0 0  1
sefa( β3x 2 x ) |   4 |   0   2   0   2   0   0 |  *  *  *  *   * 96   *  * |  0  1  0 0  1
sefa( s 2 s4x ) |   4 |   0   1   2   0   0   1 |  *  *  *  *   *  * 192  * |  0  0  1 0  1
sefa( . x3β4x ) |   4 |   0   0   0   0   2   2 |  *  *  *  *   *  *   * 96 |  0  0  0 1  1
----------------+-----+-------------------------+---------------------------+--------------
      β3x3β .   ♦  24 |  12   0  12  12  12   0 |  0  4  4  0  12  0   0  0 | 16  *  * *  *
      β3x 2 x   ♦  12 |   6   6   0   6   0   0 |  3  2  0  0   0  3   0  0 |  * 32  * *  *
both( s 2 s4x ) ♦   8 |   0   4   4   0   0   4 |  0  0  0  2   0  0   4  0 |  *  * 48 *  *
      . x3β4x   ♦  48 |  24  24   0   0  24  24 | 12  0  8 12   0  0   0 12 |  *  *  * 8  *
sefa( β3x3β4x ) ♦   8 |   0   2   4   2   2   2 |  0  0  0  0   2  1   2  1 |  *  *  * * 96

starting figure: x3x3x4x