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