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