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