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