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