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