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