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