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