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