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