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