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