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