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