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