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