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