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