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