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