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