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