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)(9,15)(11,16)(13,14)(33,34,38,39)(35,40,42,37)(36,44,46,41)(43,45,48,47)(2,7)(3,10)(9,12)(11,13)(17,18,22,23)(19,21,25,30)(20,24,29,31)(26,28,27,32)(34,39)(35,42)(41,44)(43,48)(2,7)(5,8)(9,12)(14,16)(18,23)(21,30)(24,31)(28,32)(33,35)(34,40)(36,43)(37,39)(38,42)(41,47)(44,45)(46,48) involution — undirected(1,3)(2,8)(4,13)(5,7)(6,10)(9,14)(11,15)(12,16)(17,19,22,25)(18,21,23,30)(20,27,29,26)(24,32,31,28)(33,36,38,46)(34,41,39,44)(35,43,42,48)(37,45,40,47)(1,4,6,15)(2,9,7,12)(3,11,10,13)(5,14,8,16)(17,20)(18,24)(19,26)(21,28)(22,29)(23,31)(25,27)(30,32)(1,5,6,8)(2,3,7,10)(4,14,15,16)(9,11,12,13)(17,21)(18,25)(19,23)(20,28)(22,30)(24,27)(26,31)(29,32)(33,37,38,40)(34,35,39,42)(36,45,46,47)(41,43,44,48)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.