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