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