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