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