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