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