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