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