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