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