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