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