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