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