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