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