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