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