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