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