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