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