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)(17,18,22,23)(19,24,28,27)(20,30,31,25)(21,26,32,29)(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)(17,18,22,23)(19,27,28,24)(20,25,31,30)(21,26,32,29)(33,35,40,38)(34,41,39,44)(36,46,37,45)(42,48,43,47)(3,12)(4,13)(8,15)(9,14)(18,23)(19,28)(25,30)(26,29)(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)(17,19,22,28)(18,24,23,27)(20,29,31,26)(21,25,32,30)(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)(17,20)(18,25)(19,29)(21,27)(22,31)(23,30)(24,32)(26,28)(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)(17,21,22,32)(18,26,23,29)(19,30,28,25)(20,24,31,27)(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.