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