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