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