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