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