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