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