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