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