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