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