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)(19,20)(21,24)(22,25)(23,26)(27,28)(29,30)(31,32)(33,34)(35,43)(36,47)(37,48)(38,39)(40,46)(41,45)(42,44)(2,8)(5,9)(10,15)(13,16)(17,19)(18,20)(21,27)(22,23)(24,28)(25,26)(29,32)(30,31)(33,34,39,38)(35,40,46,43)(36,41,45,47)(37,48,44,42)(1,3,7,4)(2,9,8,5)(6,11,14,12)(10,16,15,13)(17,18)(19,26)(20,23)(21,24)(22,25)(27,32)(28,31)(29,30)(33,35)(34,40)(36,44)(37,45)(38,43)(39,46)(41,42)(47,48)(1,4,7,3)(2,9,8,5)(6,11,14,12)(10,13,15,16)(17,18)(19,20)(21,29)(22,25)(23,26)(24,30)(27,32)(28,31)(33,36,39,45)(34,41,38,47)(35,44,46,37)(40,42,43,48)(1,5,7,9)(2,4,8,3)(6,13,14,16)(10,12,15,11)(17,20)(18,23)(19,25)(21,28)(22,26)(24,31)(27,29)(30,32)(33,37,39,44)(34,42,38,48)(35,45,46,36)(40,41,43,47)(1,6,7,14)(2,10,8,15)(3,11,4,12)(5,13,9,16)(17,21)(18,24)(19,27)(20,28)(22,30)(23,31)(25,29)(26,32)(33,38,39,34)(35,43,46,40)(36,41,45,47)(37,48,44,42)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.