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