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