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