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)(17,18,22,20)(19,23,25,26)(21,24,29,28)(27,30,31,32)(33,34,39,44)(35,42,46,40)(36,41,37,47)(38,43,48,45)(1,3,7,4)(2,8,5,9)(6,11,14,12)(10,15,13,16)(17,19)(18,23)(20,26)(21,27)(22,25)(24,30)(28,32)(29,31)(33,35)(34,40)(36,43)(37,45)(38,41)(39,46)(42,44)(47,48)(2,5)(6,14)(8,9)(11,12)(19,25)(21,29)(23,26)(24,28)(33,36,39,37)(34,41,44,47)(35,43,46,45)(38,42,48,40)(1,4,7,3)(2,9,5,8)(6,12,14,11)(10,16,13,15)(17,20,22,18)(19,26,25,23)(21,24,29,28)(27,30,31,32)(33,37,39,36)(34,41,44,47)(35,45,46,43)(38,42,48,40)(1,5,7,2)(3,8,4,9)(6,13,14,10)(11,15,12,16)(17,21,22,29)(18,24,20,28)(19,27,25,31)(23,30,26,32)(33,35)(34,42)(36,45)(37,43)(38,41)(39,46)(40,44)(47,48)(1,6,7,14)(2,10,5,13)(3,11,4,12)(8,15,9,16)(17,19)(18,23)(20,26)(21,27)(22,25)(24,30)(28,32)(29,31)(33,38)(34,43)(35,41)(36,40)(37,42)(39,48)(44,45)(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.