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)(21,22,26,31)(23,29,34,28)(24,35,33,36)(25,32,27,30)(1,2,4,3)(5,7,9,15)(6,10,12,13)(8,16,17,14)(11,18,19,20)(21,23)(22,28)(24,27)(25,33)(26,34)(29,31)(30,36)(32,35)(5,8)(6,11)(7,14,15,16)(9,17)(10,18,13,20)(12,19)(21,24,25,34,26,33,27,23)(22,29,30,36,31,28,32,35)(1,3,4,2)(6,12)(10,13)(11,19)(18,20)(21,25,26,27)(22,30,31,32)(23,33,34,24)(28,36,29,35)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.