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