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