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