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