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