One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,5,4)(3,7,8,6)(10,13)(14,16)(17,18,24,28)(19,25,22,23)(20,30,29,26)(21,27,31,32)(1,3)(2,6)(4,7)(5,8)(11,15)(14,16)(17,19,24,22)(18,25,28,23)(20,31,29,21)(26,27,30,32)(9,10)(11,14)(12,13)(15,16)(17,20)(18,26)(19,21)(22,31)(23,27)(24,29)(25,32)(28,30) involution — undirected(2,4)(6,7)(9,11,12,15)(10,14,13,16)(17,21,24,31)(18,27,28,32)(19,29,22,20)(23,30,25,26)(1,3)(2,6)(4,7)(5,8)(9,10)(11,14)(12,13)(15,16)(17,22,24,19)(18,23,28,25)(20,31,29,21)(26,27,30,32)(1,4,5,2)(3,7,8,6)(17,23)(18,19)(20,27)(21,26)(22,28)(24,25)(29,32)(30,31)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.