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)(7,18,21,32,22,31,20,13)(8,23,26,15,9,27,25,14)(19,29,35,33,24,30,34,36)(5,7,10,20,11,22,12,21)(6,13,16,18,17,32,28,31)(8,24,25,35,9,19,26,34)(14,29,23,33,15,30,27,36)(5,8,12,26,11,9,10,25)(6,14,28,27,17,15,16,23)(7,19,21,35,22,24,20,34)(13,29,31,36,32,30,18,33)(2,4)(5,9,11,8)(6,15,17,14)(7,19,22,24)(10,25,12,26)(13,30,32,29)(16,23,28,27)(18,33,31,36)(20,35,21,34)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.