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