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