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