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