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