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