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