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