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