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