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