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