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