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