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