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