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)(17,18,23,21)(19,20,27,24)(22,29,30,25)(26,31,32,28)(33,34,38,37)(35,39,44,42)(36,40,45,46)(41,47,43,48)(1,3,6,11)(2,7,8,16)(4,10,13,14)(5,12,15,9)(17,19,23,27)(18,24,21,20)(22,26,30,32)(25,31,29,28)(33,35)(34,39)(36,43)(37,42)(38,44)(40,48)(41,45)(46,47)(2,8)(3,11)(4,13)(5,15)(18,21)(20,24)(22,30)(26,32)(33,36,38,45)(34,40,37,46)(35,41,44,43)(39,47,42,48)(1,4)(2,9)(3,10)(5,7)(6,13)(8,12)(11,14)(15,16)(17,20)(18,19)(21,27)(22,28)(23,24)(25,26)(29,32)(30,31)(33,37,38,34)(35,42,44,39)(36,40,45,46)(41,47,43,48)(1,3)(2,7)(4,14)(5,12)(6,11)(8,16)(9,15)(10,13)(17,21,23,18)(19,24,27,20)(22,29,30,25)(26,31,32,28)(33,36)(34,40)(35,43)(37,46)(38,45)(39,48)(41,44)(42,47)(1,5,6,15)(2,10,8,14)(3,12,11,9)(4,7,13,16)(17,22,23,30)(18,25,21,29)(19,26,27,32)(20,28,24,31)(33,35)(34,39)(36,43)(37,42)(38,44)(40,48)(41,45)(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.