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