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