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