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