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