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