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