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