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