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