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)(19,20)(21,25)(22,26)(23,31)(24,29)(27,28)(30,32)(1,3)(2,5)(4,8)(6,7)(9,10)(11,15)(12,14)(13,16)(17,19)(18,24)(20,26)(21,28)(22,29)(23,30)(25,31)(27,32) involution — undirected(9,11)(10,13)(12,16)(14,15)(17,20,28,32,22,24,23,25)(18,21,31,29,26,30,27,19)(3,8)(5,7)(10,14)(11,16)(17,21,22,30)(18,25,26,32)(19,28,29,23)(20,27,24,31)(2,6)(5,7)(10,14)(13,15)(18,26)(19,29)(21,30)(27,31) 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.