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