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