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