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