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