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