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