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