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