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