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