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