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