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