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)(19,20)(21,29)(22,23)(24,31)(25,28)(26,32)(27,30)(33,34,39,37)(35,40,36,41)(38,42,46,45)(43,47,44,48)(2,6)(3,10)(8,14)(11,13)(17,19,22,25)(18,20,23,28)(21,30,31,26)(24,32,29,27)(35,36)(38,46)(40,41)(42,45)(4,12)(8,14)(11,13)(15,16)(18,23)(19,25)(24,29)(26,30)(33,35,39,36)(34,40,37,41)(38,43,46,44)(42,47,45,48)(1,3)(2,7)(4,13)(5,10)(6,9)(8,16)(11,12)(14,15)(17,20)(18,19)(21,27)(22,28)(23,25)(24,26)(29,30)(31,32)(33,36,39,35)(34,41,37,40)(38,44,46,43)(42,48,45,47)(1,4)(2,8)(3,11)(5,12)(6,14)(7,15)(9,16)(10,13)(17,18)(19,20)(21,24)(22,23)(25,28)(26,27)(29,31)(30,32)(33,37,39,34)(35,40,36,41)(38,45,46,42)(43,47,44,48)(1,2)(3,7)(4,8)(5,6)(9,10)(11,15)(12,14)(13,16)(17,21)(18,24)(19,26)(20,27)(22,31)(23,29)(25,30)(28,32)(33,38,39,46)(34,42,37,45)(35,43,36,44)(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.