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