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