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