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