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