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