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