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