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)(21,22,26,29)(23,31,33,28)(24,25,30,27)(32,34,36,35)(5,7,9,15)(6,10,12,13)(8,16,17,14)(11,19,20,18)(21,23,26,33)(22,28,29,31)(24,32,30,36)(25,35,27,34)(21,24,27,22,26,30,25,29)(23,32,34,28,33,36,35,31)(5,8,9,17)(6,11,12,20)(7,14,15,16)(10,18,13,19)(23,33)(28,31)(32,36)(34,35)(1,3,4,2)(6,12)(10,13)(11,20)(18,19)(21,25,26,27)(22,24,29,30)(23,34,33,35)(28,36,31,32)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.