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