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