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