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