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