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