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