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