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