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