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