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