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