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