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