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