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