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