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