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