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