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