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