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