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