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