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