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