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