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