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