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