One vertex per element, one color per generator, with an edge from x to x·s.
(9,10,14,13)(11,17,19,15)(12,20,21,16)(18,22,24,23)(25,26)(27,36)(28,38)(29,37)(30,32)(31,35)(33,39)(34,40)(1,2,5,8)(3,4,7,6)(9,11)(10,15)(12,18)(13,17)(14,19)(16,22)(20,23)(21,24)(25,27,31,30)(26,32,35,36)(28,34,39,37)(29,33,40,38)(1,3)(2,6)(4,8)(5,7)(12,21)(16,20)(18,24)(22,23)(25,27,31,30)(26,32,35,36)(28,34,39,37)(29,33,40,38)(1,4,5,6)(2,7,8,3)(9,12,14,21)(10,16,13,20)(11,18,19,24)(15,22,17,23)(25,28,31,39)(26,33,35,38)(27,37,30,34)(29,36,40,32)(1,3)(2,4)(5,7)(6,8)(9,11)(10,17)(12,18)(13,15)(14,19)(16,23)(20,22)(21,24)(25,29)(26,34)(27,33)(28,36)(30,38)(31,40)(32,39)(35,37) involution — undirected(1,4)(2,7)(3,8)(5,6)(9,13,14,10)(11,17,19,15)(12,16,21,20)(18,22,24,23)(25,30,31,27)(26,32,35,36)(28,37,39,34)(29,33,40,38)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.