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