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