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