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