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