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