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