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