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