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