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