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