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