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