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