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