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