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