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