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