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