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