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