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