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