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