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