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)(21,22,25,29)(23,30,32,36)(24,28,26,34)(27,31,35,33)(5,7,9,15)(6,10,12,13)(8,16,17,14)(11,19,20,18)(21,22)(23,27)(24,34)(25,29)(26,28)(30,33)(31,36)(32,35)(21,23,24,31,25,32,26,33)(22,27,34,36,29,35,28,30)(5,8,9,17)(6,11,12,20)(7,14,15,16)(10,18,13,19)(21,24,25,26)(22,28,29,34)(23,31,32,33)(27,30,35,36)(1,3,4,2)(6,12)(10,13)(11,20)(18,19)(22,29)(27,35)(28,34)(30,36)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.