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