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