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