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