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