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