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