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