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)(14,17)(18,19)(21,22,24,29,25,27,34,28)(23,30,32,35,33,36,31,26)(13,14,16,17)(15,19,20,18)(21,23)(22,26)(24,31)(25,33)(27,35)(28,30)(29,36)(32,34)(5,7,9,8)(6,10,11,12)(13,15,16,20)(14,18,17,19)(22,27)(26,35)(28,29)(30,36)(2,4)(5,8,9,7)(6,10,11,12)(14,17)(18,19)(22,28)(23,31)(24,34)(27,29)(30,36)(32,33)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.