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