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