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