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