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