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