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