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