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