One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,4,5)(3,6,7,8)(17,18,22,24)(19,27,31,40)(20,25,32,38)(21,34,28,26)(23,35,36,30)(29,41,43,48)(33,45,42,39)(37,46,47,44)(9,10)(11,14)(12,13)(15,16)(17,19,28,35,22,31,21,30)(18,23,34,40,24,36,26,27)(20,29,42,46,32,43,33,44)(25,37,45,48,38,47,39,41)(2,5)(6,8)(10,13)(11,15)(18,24)(23,36)(25,38)(26,34)(27,40)(37,47)(39,45)(41,48) involution — undirected(9,11,12,15)(10,14,13,16)(17,20,22,32)(18,25,24,38)(19,29,31,43)(21,33,28,42)(23,37,36,47)(26,39,34,45)(27,41,40,48)(30,44,35,46)(1,3,4,7)(2,6,5,8)(10,13)(14,16)(20,32)(25,38)(29,43)(33,42)(37,47)(39,45)(41,48)(44,46)A 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.