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