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