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