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