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