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)(17,18,23,26)(19,27,29,24)(20,30,31,21)(22,25,28,32)(33,34)(35,38)(36,44)(37,40)(39,45)(41,43)(42,47)(46,48)(1,3)(2,7)(4,11)(5,12)(6,10)(8,15)(9,14)(13,16)(17,19,23,29)(18,24,26,27)(20,25,31,32)(21,28,30,22)(33,34)(35,41)(36,39)(37,40)(38,43)(42,47)(44,45)(46,48)(3,10)(4,8)(5,13)(7,14)(20,31)(21,30)(22,28)(25,32)(33,34,37,40)(35,41,43,38)(36,44,45,39)(42,46,48,47)(1,4)(2,5)(3,11)(6,8)(7,12)(9,13)(10,15)(14,16)(17,20,23,31)(18,21,26,30)(19,25,29,32)(22,24,28,27)(33,34)(35,41)(36,39)(37,40)(38,43)(42,47)(44,45)(46,48)(1,5)(2,8)(3,12)(4,9)(6,13)(7,15)(10,16)(11,14)(17,21)(18,20)(19,28)(22,29)(23,30)(24,25)(26,31)(27,32)(33,35,37,43)(34,38,40,41)(36,42,45,48)(39,46,44,47)(1,3)(2,7)(4,11)(5,12)(6,10)(8,15)(9,14)(13,16)(17,22,23,28)(18,25,26,32)(19,21,29,30)(20,24,31,27)(33,36,37,45)(34,39,40,44)(35,42,43,48)(38,46,41,47)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.