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