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