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