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