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