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