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)(21,22)(23,28)(24,29)(25,27)(26,30)(31,36)(32,34)(33,35)(5,7,10,18)(6,11,14,8)(9,16,20,17)(12,15,13,19)(22,27)(23,31)(24,26)(28,35)(32,33)(34,36)(2,4)(5,8,10,11)(6,7,14,18)(9,19,20,15)(12,16,13,17)(21,23)(22,28)(24,31)(25,32)(26,33)(27,34)(29,36)(30,35)(2,4)(6,12)(7,16)(9,20)(13,14)(15,19)(17,18)(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.