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