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