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