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