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