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