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