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