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)(17,18,23,20)(19,21,24,26)(22,25,30,28)(27,29,31,32)(33,34,39,38)(35,40,45,44)(36,46,47,41)(37,42,43,48)(1,3,6,11)(2,7,5,9)(4,10,13,16)(8,14,12,15)(17,19)(18,21)(20,26)(22,27)(23,24)(25,29)(28,32)(30,31)(33,35,39,45)(34,40,38,44)(36,37,47,43)(41,48,46,42)(1,3)(2,7)(4,10)(5,9)(6,11)(8,14)(12,15)(13,16)(17,18,23,20)(19,26,24,21)(22,25,30,28)(27,32,31,29)(33,36,39,47)(34,41,38,46)(35,43,45,37)(40,42,44,48)(1,3)(2,7)(4,10)(5,9)(6,11)(8,14)(12,15)(13,16)(17,20,23,18)(19,26,24,21)(22,25,30,28)(27,29,31,32)(33,37)(34,42)(35,36)(38,48)(39,43)(40,46)(41,44)(45,47)(1,4,6,13)(2,8,5,12)(3,10,11,16)(7,14,9,15)(17,21,23,26)(18,24,20,19)(22,29,30,32)(25,31,28,27)(33,36)(34,41)(35,37)(38,46)(39,47)(40,48)(42,44)(43,45)(1,5,6,2)(3,9,11,7)(4,12,13,8)(10,15,16,14)(17,22,23,30)(18,25,20,28)(19,27,24,31)(21,29,26,32)(33,38,39,34)(35,44,45,40)(36,46,47,41)(37,42,43,48)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.