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