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