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