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