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