One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,7,12)(3,13,4,9)(5,11,6,10)(8,15,16,14)(18,23)(19,27)(20,21)(25,26)(28,29)(30,32)(1,3,7,4)(2,8,12,16)(5,14,6,15)(9,10,13,11)(17,18,22,26)(19,24,28,31)(20,23,21,25)(27,30,29,32)(1,4,7,3)(2,9,12,13)(5,14,6,15)(8,10,16,11)(17,19,22,28)(18,24,26,31)(20,27,21,29)(23,30,25,32)(1,5,7,6)(2,10,12,11)(3,14,4,15)(8,13,16,9)(19,28)(24,31)(27,29)(30,32)(1,5,7,6)(2,10,12,11)(3,15,4,14)(8,9,16,13)(17,20,22,21)(18,25,26,23)(19,27,28,29)(24,32,31,30)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.