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