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