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