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