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