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