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