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