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