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