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