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