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