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