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