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