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