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