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