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