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