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