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