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