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