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