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