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