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