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