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