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