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