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