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