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