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