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