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