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