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