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