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