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