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