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