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