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