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