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)(21,22,26,28,25,30,24,29)(23,27,33,36,31,35,32,34)(1,3,4,2)(5,7,9,8)(6,10,12,11)(14,17)(15,20)(21,23)(22,27)(24,32)(25,31)(26,33)(28,36)(29,34)(30,35)(5,7,9,8)(6,11,12,10)(13,15,16,20)(14,18,17,19)(22,28)(23,31)(24,26)(27,34)(29,30)(35,36)(5,8,9,7)(6,11,12,10)(14,17)(18,19)(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.