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