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