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