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