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