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