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