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