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