One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,3,4)(21,22,25,31,27,33,26,32)(23,30,35,29,24,36,34,28)(2,4)(5,6)(7,13)(8,11)(9,12)(10,15)(14,19)(16,18)(17,20)(21,23,27,24)(22,28,33,29)(25,34,26,35)(30,31,36,32)(5,7,9,15)(6,10,12,13)(8,16,17,14)(11,19,20,18)(21,23,27,24)(22,29,33,28)(25,34,26,35)(30,32,36,31)(5,8,9,17)(6,11,12,20)(7,14,15,16)(10,18,13,19)(21,24,27,23)(22,30,33,36)(25,34,26,35)(28,31,29,32)(6,12)(10,13)(11,20)(18,19)(21,25,27,26)(22,31,33,32)(23,34,24,35)(28,36,29,30)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.