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