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