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