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