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