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