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