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