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