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