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