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