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