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