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