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