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