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