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