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