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