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