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