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)(15,17)(16,18)(19,20)(21,22,26,34,24,28,25,29)(23,30,35,36,32,27,33,31)(5,7)(6,10)(8,11)(9,12)(13,15,16,19)(14,17,18,20)(21,23,25,33,24,32,26,35)(22,27,29,36,28,30,34,31)(5,6,9,8)(7,10,12,11)(14,18)(17,20)(21,22,24,28)(23,31,32,36)(25,34,26,29)(27,33,30,35)(2,4)(5,8,9,6)(7,10,12,11)(23,32)(27,30)(31,36)(33,35)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.