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