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