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