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