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