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