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