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