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