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