No uniform realisation is possible.

Incidence matrix according to Dynkin symbol

o3β4β3o

both( . . . . ) | 288 |   2    8   2 |  1   4  1   6   6 |  2  2   4
----------------+-----+--------------+-------------------+----------
sefa( o3β . . ) |   2 | 288    *   * |  1   0  0   2   0 |  2  0   1
sefa( . s4s . ) |   2 |   * 1152   * |  0   1  0   1   1 |  1  1   1
sefa( . . β3o ) |   2 |   *    * 288 |  0   0  1   0   2 |  0  2   1
----------------+-----+--------------+-------------------+----------
      o3β . .   ♦   3 |   3    0   0 | 96   *  *   *   * |  2  0   0
both( . s4s . ) ♦   4 |   0    4   0 |  * 288  *   *   * |  1  1   0
      . . β3o   ♦   3 |   0    0   3 |  *   * 96   *   * |  0  2   0
sefa( o3β4β . ) |   3 |   1    2   0 |  *   *  * 576   * |  1  0   1
sefa( . β4β3o ) |   3 |   0    2   1 |  *   *  *   * 576 |  0  1   1
----------------+-----+--------------+-------------------+----------
      o3β4β .   ♦  24 |  24   48   0 |  8  12  0  24   0 | 24  *   *
      . β4β3o   ♦  24 |   0   48  24 |  0  12  8   0  24 |  * 24   *
sefa( o3β4β3o ) ♦   4 |   1    4   1 |  0   0  0   2   2 |  *  * 288

or
both( . . . . )   | 288 |   4    8 |   2   4   12 |  4   4
------------------+-----+----------+--------------+-------
sefa( o3β . . ) & |   2 | 576    * |   1   0    2 |  2   1
sefa( . s4s . )   |   2 |   * 1152 |   0   1    2 |  2   1
------------------+-----+----------+--------------+-------
      o3β . .   & ♦   3 |   3    0 | 192   *    * |  2   0
both( . s4s . )   ♦   4 |   0    4 |   * 288    * |  2   0
sefa( o3β4β . ) & |   3 |   1    2 |   *   * 1152 |  1   1
------------------+-----+----------+--------------+-------
      o3β4β .   & ♦  24 |  24   48 |   8  12   24 | 48   *
sefa( o3β4β3o )   ♦   4 |   2    4 |   0   0    4 |  * 288

starting figure: o3x4x3o