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