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