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