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