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