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