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