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