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