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