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