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