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