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