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)(17,18,22,24)(19,23,27,28)(20,31,30,25)(21,32,29,26)(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)(18,23)(20,29)(21,30)(22,27)(24,28)(25,32)(26,31)(34,36)(40,41)(42,44)(47,48)(3,12)(5,16)(7,8)(10,14)(18,24)(19,27)(21,29)(25,31)(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)(17,18)(19,28)(20,31)(21,26)(22,24)(23,27)(25,30)(29,32)(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)(17,20,22,30)(18,25,24,31)(19,29,27,21)(23,32,28,26)(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)(17,21,22,29)(18,26,24,32)(19,30,27,20)(23,31,28,25)(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.