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