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