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