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