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