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