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