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