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