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