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