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