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