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