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