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