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