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