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