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