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