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