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