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