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)(21,29)(24,31)(26,32)(28,30)(1,2)(3,6)(4,5)(7,8)(17,18,22,25)(19,20,27,23)(21,24,29,31)(26,28,32,30)(9,10)(11,15)(12,14)(13,16)(17,19,22,27)(18,23,25,20)(21,26,29,32)(24,30,31,28)(9,11)(10,13)(12,16)(14,15) involution — undirected(17,20,22,23)(18,19,25,27)(21,28,29,30)(24,26,31,32)(1,3,4,7)(2,6,5,8)(17,21)(18,24)(19,26)(20,28)(22,29)(23,30)(25,31)(27,32)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.