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