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