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