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