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