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