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