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