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