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