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