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)(23,29)(24,32)(25,31)(26,27)(28,33)(30,35)(34,36)(6,7)(10,11)(13,15,16,19)(14,17,18,20)(22,27)(24,33)(25,29)(30,34)(5,6,9,7)(8,10,12,11)(13,14)(15,17)(16,18)(19,20)(21,23)(22,25)(24,34)(26,31)(27,29)(28,36)(30,33)(32,35)(1,2,3,4)(5,7,9,6)(8,11,12,10)(13,15)(14,17)(16,19)(18,20)(21,24)(22,28)(23,30)(25,35)(26,33)(27,32)(29,36)(31,34)(5,8,9,12)(6,10,7,11)(13,14)(15,17)(16,18)(19,20)(21,25)(22,23)(24,35)(26,29)(27,31)(28,30)(32,34)(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.