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