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