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