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