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)(17,18)(19,26)(20,31)(21,24)(22,27)(23,28)(25,29)(30,32)(2,5)(6,8)(9,11)(10,13)(12,16)(14,15)(17,19,22,29)(18,25,27,26)(20,24,30,23)(21,31,28,32)(10,14)(11,16)(17,20,24,29,22,30,23,19)(18,26,28,32,27,25,21,31)(1,3,4,7)(2,6,5,8)(10,14)(13,15)(17,21,24,18,22,28,23,27)(19,25,20,31,29,26,30,32)(2,5)(6,8)(10,14)(13,15)(18,27)(21,28)(25,26)(31,32) 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.