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