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