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