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