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