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