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