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