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