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