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