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