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