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