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