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