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