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