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