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