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