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