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