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