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