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