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