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