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)(14,18)(16,19)(21,22)(23,29)(24,26)(25,32)(27,30)(28,33)(31,34)(35,36)(5,6,9,12)(7,10,8,11)(14,18)(15,20)(22,24)(23,30)(28,32)(31,36)(5,7,9,8)(6,10,12,11)(13,14,17,18)(15,19,20,16)(21,23)(22,27)(24,29)(25,31)(26,30)(28,34)(32,35)(33,36)(1,2)(3,4)(5,6)(7,10)(8,11)(9,12)(13,15)(14,19)(16,18)(17,20)(21,24,26,22)(23,29,30,27)(25,28,33,32)(31,34,36,35)(5,8,9,7)(6,11,12,10)(13,16,17,19)(14,15,18,20)(21,25,26,33)(22,28,24,32)(23,31,30,36)(27,34,29,35)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.