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