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