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