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