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