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