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