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