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