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