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