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