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