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