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