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