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