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