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