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