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