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