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