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