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