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