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