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)(17,18,22,26)(19,23,21,25)(20,24,29,32)(27,30,28,31)(33,34,39,42)(35,40,45,36)(37,38,41,47)(43,44,48,46)(2,7)(3,8)(9,15)(11,13)(17,19,22,21)(18,23,26,25)(20,28,29,27)(24,31,32,30)(33,35,39,45)(34,40,42,36)(37,43,41,48)(38,44,47,46)(2,7)(4,10)(9,15)(12,16)(17,18)(19,23)(20,24)(21,25)(22,26)(27,30)(28,31)(29,32)(33,36,39,40)(34,35,42,45)(37,46,41,44)(38,43,47,48)(1,3,6,8)(2,4,7,10)(5,13,14,11)(9,16,15,12)(17,20,22,29)(18,24,26,32)(19,27,21,28)(23,30,25,31)(33,37)(34,38)(35,43)(36,46)(39,41)(40,44)(42,47)(45,48)(1,4)(2,8)(3,7)(5,12)(6,10)(9,13)(11,15)(14,16)(17,18)(19,23)(20,24)(21,25)(22,26)(27,30)(28,31)(29,32)(33,36)(34,35)(37,46)(38,43)(39,40)(41,44)(42,45)(47,48) involution — undirected(1,5)(2,9)(3,11)(4,12)(6,14)(7,15)(8,13)(10,16)(17,21,22,19)(18,25,26,23)(20,28,29,27)(24,31,32,30)(33,38)(34,41)(35,44)(36,43)(37,42)(39,47)(40,48)(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.