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