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