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