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