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