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