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