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