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