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