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)(15,17)(16,19)(21,22,26,27)(23,28,30,24)(25,33,36,29)(31,32,34,35)(5,7,9,8)(6,10,11,12)(13,14)(15,16)(17,19)(18,20)(22,27)(23,30)(29,33)(31,34)(6,11)(10,12)(13,15,18,17)(14,19,20,16)(21,23)(22,28)(24,27)(25,34)(26,30)(29,32)(31,36)(33,35)(1,2)(3,4)(5,6)(7,10)(8,12)(9,11)(13,16,18,19)(14,15,20,17)(21,24,26,28)(22,23,27,30)(25,35,36,32)(29,34,33,31)(5,8,9,7)(6,12,11,10)(13,17,18,15)(14,19,20,16)(21,25)(22,29)(23,31)(24,32)(26,36)(27,33)(28,35)(30,34)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.