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