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)(14,16)(15,19)(21,22,26,28,25,30,24,29)(23,27,33,36,31,35,32,34)(5,7,8,11)(6,9,10,12)(13,14,17,16)(15,20,19,18)(21,23)(22,27)(24,32)(25,31)(26,33)(28,36)(29,34)(30,35)(7,11)(9,12)(13,15,17,19)(14,18,16,20)(22,28)(23,31)(24,26)(27,34)(29,30)(35,36)(2,4)(13,16,17,14)(15,18,19,20)(23,31)(27,35)(32,33)(34,36)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.