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