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