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