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