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