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