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