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