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