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